I want to use django-comments-dab but I meet this Error,
AttributeError: ‘NoneType’ object has no attribute ‘lower’.
Request Method: GET
Request URL: http://127.0.0.1:8000/2020/9/6/test4
Django Version: 3.1.1
Exception Type: AttributeError
Exception Value:
‘NoneType’ object has no attribute ‘lower’
Exception Location: D:amirblogvenvlibsite-packagescommentutils.py, line 26, in get_model_obj
Python Executable: D:amirblogvenvScriptspython.exe
utils.py
def get_model_obj(app_name, model_name, model_id): content_type = ContentType.objects.get(app_label=app_name, model=model_name.lower()) model_object = content_type.get_object_for_this_type(id=model_id) return model_object
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Answer
model_name
is None
and not a string. Only strings have the lower
method defined for them. Try print(model_name)
and print(type(model_name))
to see that this is the case, and then fix whatever is calling get_model_obj
to pass in a string.